Where am I?: Home to a heavenly dome

Here's the dome of a church dedicated to St. Paul, a hulking structure full of celestial imagery and a bunch of cool stained glass. It exists in large part because of pioneering work done by a bishop named Crétin. But which church and what city are these?


1. Where am I?
A. Archcathedral Basilica of St. Peter and St. Paul, built in the 10th century AD, Poznan, Poland
B. Cathedral of Saint Paul, built 1915, St. Paul, Minnesota
C. St. Paul Catholic Church, built 1830, Cambridge, Massachusetts
D. St. Paul's Cathedral, built 1673, London, England
E. St. Paul's Episcopal Church, built 1919, Augusta, Georgia